Mark Huggett (Centro de Investigacion Economica (CIE), Instituto Tecnologico Autonomo de Mexico (ITAM)) Sandra Ospina (Centro de Investigacion Economica (CIE), Instituto Tecnologico Autonomo de Mexico (ITAM))
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When does idiosyncratic earnings uncertainty increase aggregate saving? We address this question in the context of a general equilibrium model where infinitely-lived agents receive idiosyncratic labor endowment shocks, hold a risk-free asset to smooth consumption and face a liquidity constraint. We prove that the steady-state capital stock is always larger in any equilibrium with idiosyncratic shocks and a liquidity constraint than without idiosyncratic shocks (i.e. there is aggregate precautionary saving) as long as utility functions are strictly concave. We also prove that aggregate precautionary saving occurs if and only if the liquidity constraint binds for some agents.
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Paper provided by Centro de Investigacion Economica, ITAM in its series Working Papers with number
9802.
Find related papers by JEL classification: E13 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Neoclassical E21 - Macroeconomics and Monetary Economics - - Macroeconomics: Consumption, Saving, Production, Employment, and Investment - - - Consumption; Saving; Wealth D91 - Microeconomics - - Intertemporal Choice and Growth - - - Intertemporal Consumer Choice; Life Cycle Models and Saving
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